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Genetic engineering: a matter that requires further refinem..:

Martínez-Gracia, M. V ; Gil-Quýlez, M. J ; Osada, J
International journal of science education.  25 (2003)  9 - p. 1148-1168 , 2003
Exemplar:  Zentrale:E03 z pae 638 j/734; Zentrale:Magazin Zs fe 1734